Cementing-machine.



. W. F. SMITH. CEMENTING MACHINE. APPLICATION FILED FEB. 2,1917.

1 ,288,247, I I Patented Dec. 17,1918.

WILLIAM F. sm'rn, or SALEM, NEW nantrsnmn, AssIeNor. '10 invma L. KEITH, or"

. nAvEnHILL, MASSACHUSETTS.

Patented Dec. 1?, 1918.

CEMENTING-MACHINE.

11,288,24'3'. Specification of Letters Patent.

- Application filed February 2, 1917. Serial No.146,270.

To all whom it may concern: 4

Be it knownthat 1, WILLIAM F. SMITH, a citizen of the United States, and a resident of Salem county of Rockingham, and State of New l-Iam shire, have invented an Im-- provement in ementing-Machines, of which the following is a. specification.

This invention relates to that class of cementing machines in which an apertured plate ofgrid, having horizontal cement carrying faces, is arranged to be raised and lowered in a receptacle containing liquid cement, the material to be cemented being laid on saidface while thelatter is held above the level of the cement.

In cementing textile fabric to the inner side of 1i ht weight upper leather, if the entire sur ace is coated with cement by a brush, the fabric is liable to cockle when it dries; on account of shrinkage of threads.

acter above referred to have been produced, which are designed to appl the cement over a portion only of the sur ace to which the cement is applied. Some of these prior, de-

vices comprise straight bars, on whichupright cement applying fingers are formed and others which comprise straight, or gradually curved bars, having continuous cement applying upper edges. In cementing long narrow pieces of textile material, such as textile eyelet stays, to the inner sides of shoe uppers, with devices of this character, unsatisfactory results have previously been secured for, when employed for this particu lar purpose, the stays were not attached with suflicient security and, on account of the fact that these stays are curved, when continuous, approximately straight strips of cement were applied thereto, some of these strips are likely to extend nearly longitudinally of one set of threads, particularly if special care is not exercised bythe operator, thereby causing a portion of these threads to shrink, so that the stay will not lie flat on the surface to which it is cemented.

It is customary, in connection with cementing machines of this character, to employ a cement which is in the form of a heavy, slow flowing liquid, so that spec1 al provision must be made to perm1t the rapid escape of the cement from the cement applying surfaces, when the grid is raised, and so that no cement will be held between said surfaces in a position to touch the surfaceto be cemented and free up and down movement of the grid will be permitted.

The object of my invention is to provide a form of cementingmachine, of the general character above referred to, which is adapted to apply cement to narrow, curved pieces of textile material in such a manner and in a sufiicient quantity to cause the same to adhere firmly in position and without causing them to wrinkle, so that they will lie flat on the surfaces to which they are cemented.

A further object is to provide a machine of this character which will provide a maxi- Fig. 4 is a view illustrating the manner in I which the cement is applied.

As shown in the drawing, a suitable bench, or table a is provided, on which-shallow oblong receptacle 6 is supported, said receptacle being adapted to contain liquid cement to asuitable de th. A. bar carrying frame is provided, whlch is-composed ofa pair of parallel siderods c, and a pair of cross bars d, in which the ends of said side rods are held; said cross bars having arms d extending upwardly therefrom and over the ends of the receptacle and being connected to the 'arms of a yoke e, which extend through the table and are adapted to be raised and lowered .by a suitable treadle mechanism, not shown, in a well known manner. The frame is thus supported in a horizontal position and is arranged to be raised and lowered by the treadle mechanism while held in this position.

Mounted edgewise on the rods 0, in parallel relation to the cross barsd, are a series of fiat, sheet-metal bars f, said rods being passed through the end portions of said bars and thelatt'er being spaced apart by interposed rings or washers g, the width of the spaces between said bars, in proportion to the thickness of the bars themselves, being,

in practice, about three to one. The upper edges of said bars are continuous and disposed in the same horizontal plane.

The intermediate portions of said bars f are bent in zig-zag form, or are bent toforn'a a regular series of sharp angles or V shaped portions therein, said angles pointing in opposite directions, alternately. The cement applying portion of 'each bar is thus cornposedof a series of stralght sect ons disposed in alternate positions of obliquity to the general direction, or ultimate line in which the bar extends. of identical construction, the angles formed therein are correspondingly disposed in rows, each row lie in a straight line, "which is parallel to the rods 0. As the zigzag formation of all the bars is identical, the space between each pair of bars, at all points, is uniform and the width of this space is such, as compared with the distance the bars are ex tended laterally from a straight line between the ends thereof, that the vertex of each angle extends slightly within the sides of the corresponding angle of the next adjacent bar, or, in other words, said bars are so arranged that the vertices of all the angles not only lie approximately in straight lmes, which extend transversely of the bars, but

also in straight lines which extend lonlgi tudinally thereof, or at right angles to the transverse lines.

The bars are made as narrow as practicable throughout their zig-zag portions and are increased in width at their ends from the level of their upper edges, downwardly to an extent sufiicient to receive the side rods 0, as

shown in Fig. 3. The upper edges of said bars, which constitute the cement carrying surfaces must be freed from surplus cement as rapidly as possible when raised, and by reducing the width of said bars or distance between their upper and lower edges, as the thick, slow flowing cement, which is employed, may flow away from said upper edges much more rapidly than it would if the vertical width of the bars were as great in the middle portion as at the ends.

In use, the bars 7' are entirely submerged in the liquid cement, in the receptacle, and,

' when the bars are raised above the surface thereof, the material to becemented is laid thereon, as indicated in Fig. 1, so that the cement will be applied thereto.

The particular advantages of the above described construction may be described as follows :As already indicated, puckering and wrinkling of textile material is usually due tounequal shrinkage of the threads. if the liquid cement were applied thereto in long straight lines, or even in gradually curved lines, it would be appliedto many of the threads throughout a considerable portion of the length thereof, depending some As all the bars are;

so that the vertices of the angles in what on the particular position in which the material happened to be placed thereon, so

that substantial shrinkage of the threads would be caused whenthey dried. With the above described aig-zag construction, however, cement will be continuously applied only to short portions of individual threads, whateverthe position in which thematerial is placed thereon, as indicated in Fig. 4, for each strip of cement extends in one direction for only a short distance. It will be also apparent that, with the above described zig-zag. construction, the total area of the cementapplying faces is much greater, for the same area of the grid, than if the bars were straight or somewhat curved, while, at the same time, the space provided, at eachside and 4. It will be observed that, when such a p1ece is applied to the cement-applying faces, formed by the upper edges of the bars 7, narrow-strips of cement will be applied thereto,

which generally "extend obliquely to the edges of the piece, whatever the position in which it may be applied thereto, and, at no point, do the strips of cement coincide with the threads of the piece, for more than short like, a form of which is indicated-in Figs. 1

distances. As'e'ach strip of cement extends,

either partly or wholly, in directions oblique to the slde edges of the piece of material, the

latter will be much more securely cemented I in posltion than if the strips of cement ex tended either nearly directly crosswise or lengthwise thereof and if the piece of material were curved as much as such piecesfrequently are, and if cement were applied thereto with straight or nearlystraight parallel bars, the probability that the cement would be applied in one or the other of these directions would be great. Obviously the conditions will be somewhat varied accordmg to the position in which the piece is applied to the bars, but in performing work like this, which must be performed very rapidly, it cannot be expected thatan operator will exercise much care as to the position in which the piece to be cemented, will be placed, and with straight, or nearly straight cementing bars, the chances that it may be placed very disadvantageously are 1 great, while with the zigzag form of bars above described, the cement will be advantageously applied under all conditions, or wherever the piece is placed thereon.

in some instances it is desired to apply a coating of the cement which is much thimier than can be applied with a brush, to practically the entire surface of the stay piece, and this may be easily accomplished with the above described device by applying the piece to the bars in any position and then drawing or sliding it longitudinally over the bars for a short distance. It will be observed that with this construction, whatever the position in which the piece is laid on the bars or what-- ever the direction in which it is sl1d or pulled longitudinally, a movement thereon for a distance no more than the width of the spaces between the bars will cause the edges of the bars to come into contact wlth the entire surface of the piece, and thiswill occur if the piece is curved and moved in a correspondingly curved directlon, While if the bars were straight, the piece would have to be moved in a direction approximately perpendicular thereto, to accomplish the same result.

While some variation in the form of the cement applying bars from that shown, may be made without departing from the spirit of my invention, the particular form shown is preferable.

ll claim.

1. In a cementing machine, a receptacle for containing liquid cement and avertically movable cementing grid therein, comprising a series of bars of flat material arranged edgewise andspaced apart, to .provide free passages for the cement at each side thereof, each of said bars having the cementing portions thereof disposed in alternating positions of obliquit wlth relation to the direction in which t e bar extends, and having'the upper edges of said portions in the same horizontal plane.

2. in a cementing machine, a receptacle for containing liquid cement, and a vertically movable, horizontally disposed cementing grid therein, comprising a series of bars arranged side by side in approximate parallelism and spaced apart to providefree passages for the cement therebetween and separate cement-applying faces at their up-' per portions disposed at the-same level, the portions of said bars bearing sa1d faces being composed of a series of obliquely extending sections arranged alternately at opposite inclinations.

3. In a cementing machine, a receptacle between and separate cement applying faces at their upper sides disposed at the same level, the portions of said bars bearing said faces being constructed to provide a series of transversely disposed angular portions with their vertices at opposite sides of and at equal distances from a straight line.

4. In a cementin machine, a receptacle for containing liquid cement and a vertically movable, horizontally disposed cementing grid therein, com risin a series of elongated bars arrange I side by side in approxlmate parallelism, spaced apart to provide free passages for the cement therebetween and separate cement-applying faces at their upper sides disposed at the same level, the portion of said bars bearing said faces being alternately extended laterally to form transversely disposed angles therein, the vertices of which lie in approximately parallel lines.

5. In a cementing machine, a receptacle for containing liquld cement and a vertically movable, horizontally disposed cementing grid, therein, comprising a series of elongated bars arranged side by side in approximate parallelism and spaced apart to provide free passages for the cement therebetween and separate cement applying faces at their upper sides disposed at the same level, the portion of said bars bearing said faces being extended to form transversely disposed angles therein, relatively so arranged that the vertices thereof lie in two sets of parallel lines which extend perpendicularly to each other;

6. In a cementin machine, a receptacle for containing liquid cement and a vertically movable, horizontally disposed cementing grid therein, comprising a series of elongated. bars arranged side by side in approximate parallelism and spaced apart to provide free passages for the cement therebetween and separate cement-applying faces at their upper sides disposed at the same level, the cement applying portions of said bars being constructed to provide transversely and oppositely disposed angles alternately therein, the vertex of each angle of one bar being disposed withiniand approximately midway between the sides of the 1gorresponding angle of the next adjacent 7. In a cementing machine, a receptacle for containing liquidcement and a vertically movably,hor1zontally disposed cement-- elon ated bars arranged side by side in para lelism and spaced apart to provide disconnected cementing faces at their upper sides disposed as the same level each be: having trensverseiy and oppesiteiydispose angular portions arranged alternately, sei. bars being correspondingiy formed, so if net the vertioes of? all the corresponding angies are disposed in lines perpendicular to bars, and being arranged in such proximity that the vertices of the angles of any one "oer which point in one direction, and the vertices of she angles of she next adjacent be? which point in the opposite direction, aii iie proximately in a streighc iine which is s to fin -neect1ons in which 30ers sally movable, horizeneeiiy disposed grid therein, semi grid eom smslng 2% frame 00?? sistini sf tfensverse end seoporis and e neiz? of peraiiei oonnectingrocis moweteei at their ends in said supports; and. e series of fist bars arranged side by side in peraileiism and through the corresponding ends of which rods pass to support the same, said ears being spaced apart and having their upeer edges in the same horizontal plane in previde separate cementing feces and the 5301'- tions of said bars between the en engaged by said rods being of reduces". widen is provide relatively short p seges versieeiiy between the bars, to p U escape of cement from said iewn 1 1 Q ugh said passages:

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